A5052056108- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Thermal Expansion and Ionic Conductivity
- Semiconductor materials and devices
- Supercapacitor Materials and Fabrication
- Extraction and Separation Processes
- Inorganic Chemistry and Materials
- Solid-state spectroscopy and crystallography
- Inorganic Fluorides and Related Compounds
- Ferroelectric and Piezoelectric Materials
- Advancements in Solid Oxide Fuel Cells
- Hydrogen Storage and Materials
- Chemical Synthesis and Characterization
- Electron and X-Ray Spectroscopy Techniques
- X-ray Diffraction in Crystallography
- Semiconductor materials and interfaces
- Crystal Structures and Properties
- Advanced battery technologies research
- Machine Learning in Materials Science
- Multiferroics and related materials
- Transition Metal Oxide Nanomaterials
- Fuel Cells and Related Materials
- Graphene research and applications
- Chalcogenide Semiconductor Thin Films
Tokyo University of Science
2025
Institute of Science Tokyo
2025
Battery Park
2025
Institute of Materials Science
2025
Shanghai Institute for Science of Science
2025
Tokyo Institute of Technology
2015-2024
Japan Atomic Energy Agency
2010
Toshiba (Japan)
1977
Gaining a thorough understanding of the reactions on electrode surfaces lithium batteries is critical for designing new materials suitable high-power, long-life operation. A technique directly observing surface structural changes has been developed that employs an epitaxial LiMn(2)O(4) thin-film model and X-ray diffraction (SXRD). Epitaxial thin films with restricted lattice planes (111) (110) are grown SrTiO(3) substrates by pulsed laser deposition. In situ SXRD studies have revealed...
No design rules have yet been established for producing solid electrolytes with a lithium-ion conductivity high enough to replace liquid and expand the performance battery configuration limits of current lithium ion batteries. Taking advantage properties high-entropy materials, we designed highly ion-conductive electrolyte by increasing compositional complexity known superionic conductor eliminate migration barriers while maintaining structural framework conduction. The synthesized phase...
All solid-state batteries are of key importance in the development next-generation energy storage devices with high density. Herein, we report fabrication and operation bulk-type 5 V-class all consisting LiNi0.5Mn1.5O4 cathode, Li10GeP2S12 solid-electrolyte, Li metal anode. The 1st discharge capacity is about 80 mAh g–1 an average voltage 4.3 V. gradually decreases during subsequent cycles. X-ray diffraction electrochemical impedance spectroscopy measurements reveal that fading results from...
We report the preparation of thick electrode all-solid-state lithium-ion cells in which a large geometric capacity 15.7 mAh cm-2 was achieved at room temperature using 600 μm-thick cathode layer. The effect ionic conductivity on discharge performance then examined two different materials for solid electrolyte. Furthermore, important morphological information regarding tortuosity factor electrochemically extracted from capacity-current data. cell also quantitatively discussed.
A variety of proton (H(+))-conducting oxides are known, including those used in electrochemical devices such as fuel cells. In contrast, pure H(-) conduction, not mixed with electron has been demonstrated for oxide-based materials. Considering that hydride ions have an ionic size appropriate fast transport and also a strong reducing ability suitable high-energy storage conversion devices, we prepared series K2NiF4-type oxyhydrides, La(2-x-y)Sr(x + y)LiH(1-x y)O(3-y), the hope observing...
The lithium diffusion pathway in the LGPS structure visualized through MEM analysis assisted elucidating conductivity changes with temperature.
Solid solutions of Sn–Si derivatives with an LGPS (Li10GeP2S12)-type structure are synthesized by a solid-state reaction in the Li3PS4–Li4SnS4–Li4SiS4 quasi-ternary system. The monophasic region LGPS-type deviates from tie line between Li10SiP2S12 and Li10SnP2S12, composition solid solution is determined to be −0.1 ≤ δ 0.5 0 y 1.0 Li10+δ[SnySi1–y]1+δP2−δS12 (0.50 x 0.7 Li4–x[SnySi1–y]1–xPxS4). formed double substitution that changes Sn/Si ratio M4+ (Sn4+ Si4+)/P5+ ratio, which adjusts sizes...
A solid electrolyte, Li10GeP2S12, exhibits a high lithium ionic conductivity of 12 mS/cm at room temperature. Because its conductivity, charge-discharge performance would be expected for the all-solid-state batteries using Li10GeP2S12 electrolytes. In this study, were constructed and their battery performances examined. The electrolyte showed higher discharge capacities than those with glass 75Li2S·25P2S5, particularly under high-rate current discharge.
Abstract Among the energy storage devices for applications in electric vehicles and stationary uses, lithium batteries typically deliver high performance. However, there is still a missing link between engineering developments large-scale fundamental science of each battery component. Elucidating reaction mechanisms under practical operation crucial future technology. Here, we report an operando diffraction technique that uses high-intensity neutrons to detect reactions non-equilibrium...
Epitaxial thin films of Al-doped Li7La3Zr2O12 (LLZO) with a cubic garnet-type structure were successfully synthesized using pulsed laser deposition to investigate the lithium ion conduction in grains. Two orientations obtained depending on Gd3Ga5O12 (GGG) substrate orientation, LLZO(001)/GGG(001) and LLZO(111)/GGG(111). The ionic conductivities grains (001) (111) 2.5 × 10−6 1.0 10−5 S cm−1 at 298 K, respectively, which lower than those polycrystalline LLZO over 10−4 cm−1. X-ray reflectometry...
Structural changes at electrode/electrolyte interface of a lithium cell were studied by X-ray reflectometry and two-dimensional model electrodes with restricted lattice plane . The constructed an epitaxial film synthesized the pulsed laser deposition method. orientation depends on substrate plane; (111), (110), (100) planes grew substrates, respectively. ex situ indicated that thin impurity layer covered as-grown film. was dissolved solid-electrolyte-interface-like phase appeared after...
Solid solutions of the silicon and tin analogous phases superionic conductor Li<sub>10</sub><italic>M</italic>P<sub>2</sub>S<sub>12</sub> (<italic>M</italic> = Si, Sn) were synthesized by a conventional solid-state reaction in an evacuated silica tube at 823 K. The ranges solid determined to be 0.20 < <italic>δ</italic> 0.43 −0.25 −0.01 Li<sub>10+δ</sub><italic>M</italic><sub>1+δ</sub>P<sub>2−δ</sub>S<sub>12</sub> (0.525 ≤ <italic>k</italic> 0.60 0.67 0.75...
Epitaxial Li(4)Ti(5)O(12) thin-films were successfully synthesized on SrTiO(3) single-crystal substrates with (111), (110), and (100) lattice plane orientations using pulsed laser deposition (PLD). Thin-film X-ray diffraction (XRD) revealed that the films had same orientation as substrates: (111) (110) (100). These epitaxial contained island structures, morphology of films, observed by field emission scanning electron microscopy (FE-SEM), exhibited angular, needle-like, circular shapes,...
A phase diagram is constructed for the quasi‐binary Li 4 GeS –Li 3 PS system containing lithium superionic conductor 10 GeP 2 S 12 ( LGPS ), having an ‐type structure, and β‐Li phase, a thio‐ LISICON structure. The intermediate compounds are found to exhibit solid solution ranges show incongruent melting at 650°C 560°C, respectively. end‐member has compositional range of 0 < k 0.3 in [(1− ) + ], while other γ‐Li no range. crystal structures appearing binary systems α‐, β‐, γ‐type these...
All-solid-state lithium–sulfur batteries were fabricated using composite electrodes incorporating sulfur, carbon replica, and a solid electrolyte. Novel liquid-phase mixing contributed to improving electrochemical properties through solid-electrolyte penetration into the mesopores of replica. Combined mechanical realized solid-state battery with high performance comparable liquid system. A discharge capacity in excess 1500 mAh g–1 Coulombic efficiency about 100% demonstrated at an applied...